<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Greetings,<o:p></o:p></p><p class=MsoNormal>I would like to resume testing MSVC STL using the Libc++ tests. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Would it be OK to add noexcept specifiers to some of the test structs that are used as template params to std::atomic? I believe this change is benign, so I am hoping you don’t care or require conditional blocks. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p style='margin:0in;margin-bottom:.0001pt'>Explanation from: <span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'><a href="https://connect.microsoft.com/VisualStudio/feedbackdetail/view/906973">https://connect.microsoft.com/VisualStudio/feedbackdetail/view/906973</a><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:27.0pt;margin-bottom:.0001pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>atomic() noexcept = default", so when the default constructor for<o:p></o:p></span></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:27.0pt;margin-bottom:.0001pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>std::atomic<T> is invoked for a type T that has a throwing constructor,<o:p></o:p></span></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:27.0pt;margin-bottom:.0001pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>the noexcept version is not found, which causes the compiler to emit<o:p></o:p></span></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:27.0pt;margin-bottom:.0001pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>an error message about the deleted function. To work around this,<o:p></o:p></span></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:27.0pt;margin-bottom:.0001pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>you need to declare the constructor of test_struct as noexcept.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The affected tests pass using:<o:p></o:p></p><p class=MsoNormal>clang version 3.5.0 (trunk 212120)<span style='font-size:12.0pt'><o:p></o:p></span></p><p class=MsoNormal>Target: x86_64-unknown-linux-gnu<o:p></o:p></p><p class=MsoNormal>Thread model: posix<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>Steve MacKenzie<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>